Finding the Fourth Proportional to 6,439,655.52, 8,886,937.68 and 3,539,149.20
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Solution
The fourth proportional to 6,439,655.52, 8,886,937.68 and 3,539,149.20 is: 4,884,142.99
Step by Step Solution
- Step 1: Write the proportion equation
6,439,655.52 : 8,886,937.68 = 3,539,149.20 : x - Step 2: Convert to fraction form
6,439,655.52/8,886,937.68 = 3,539,149.20/x - Step 3: Cross multiply
6,439,655.52x = 8,886,937.68 × 3,539,149.20 - Step 4: Simplify right side
6,439,655.52x = 31,452,198,380,621.86 - Step 5: Solve for x
x = 31,452,198,380,621.86/6,439,655.52 - Step 6: Final answer
x = 4,884,142.99
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.